US2905155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas recirculation method for controlling superheat in a slag tap vapor generating and superheating unit and apparatus therefor
Assignee: Babcock and Wilcox Co
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Filing: 1954-12-22
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Granted: 1959-09-22
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Expires: 1974-12-22
Abstract
No abstract record available.
Inventors
- 👤 Paul R Grossman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:16
CPC Classifications
F; F23; F23C; F23C99/00; F22; F22B; F22B21/00; F22B21/34; F22B21/341; F22B21/343; F22G; F22G5/00; F22G5/06; F23C2700/00; F23C2700/06; F23C2700/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |